29
visual line
of sight
400 ft
(120 m)
100 ft (30 m)
5 miles (8 km)
400 ft
(120 m)
Failsafes
visual line
of sight
400 ft
(120 m)
100 ft (30 m)
5 miles (8 km)
400 ft
(120 m)
visual line
of sight
400 ft
(120 m)
100 ft (30 m)
5 miles (8 km)
400 ft
(120 m)
Low Battery Failsafe
Environmental conditions can affect power consumption. Use the Mission Planner Flight Data
display to monitor the voltage of the battery during flight.
If the battery reaches 14 V, the X8 will land automatically at the current position, indicated by a
blinking yellow status LED and a quick repeating tone.
The X8 is programmed with a set of failsafe behaviors to prevent a crash in the event of a loss
of one of the data or communication channels required for autonomous flight. Although certain
failsafes have assigned LED indicators and tones, it is unlikely that you will be able to see these at a
distance. Monitor the Flight Data screen for failsafe indications. If a failsafe is triggered, the assigned
behavior will activate. To override the failsafe behavior (RTL in most cases), use the controller to
regain manual control.
Regaining Manual Control
To regain manual control during the mission, switch to altitude hold mode using the controller. If
you’re a confident operator, switch to stabilize mode for full manual control. If you observe instability
in the X8’s flight behavior or it the aircraft moves outside your designated safe flying area, switch to
RTL. Turning off the controller will automatically trigger an RTL and can be used in an emergency
situation as a hard recall command.
Ground Station Signal Failsfe
Physical obstructions and interference from nearby wireless signals can affect the X8’s connection
with the ground station. Use the Mission Planner Flight Data display to monitor the ground station
connection strength during flight.
If the X8 loses contact with the ground station for over five seconds, it will automatically return to
the launch point and land.
RC Controller Signal Failsafe
Physical obstructions and interference from nearby wireless signals can affect the X8’s connec-
tion with the RC controller.
If the X8 loses contact with the RC controller, it will return to the launch point automatically and
land, indicated by a blinking yellow status LED.
GPS Failsafe
Enclosed areas, physical obstructions, and lack of available satellites can affect GPS strength.
Use the Mission Planner Flight Data display to monitor the GPS during flight.
If the X8 loses GPS lock for over five seconds, it will land automatically at the current position.
visual line
of sight
400 ft
(120 m)
100 ft (30 m)
5 miles (8 km)
Altitude Failsafe
The X8 has a 120 m altitude geofence enabled by default. If the geofence is breached, the X8
will automatically RTL.
visual line
of sight
400 ft
(120 m)
100 ft (30 m)
5 miles (8 km)
400 ft
(120 m)
